<template>

  <div class="login-container">

    <el-card class="login-card">

      <h1 class="login-title">xsap系统登录</h1>

      <div class="login-form">

        <el-form :model="loginForm" ref="ruleFormRef" :rules="rules" hide-required-asterisk>
          <el-row>
            <el-col :span="24">
              <el-form-item label="用户名" label-width="60px" prop="username">
                <el-input v-model="loginForm.username" autocomplete="off" prefix-icon="user" maxlength="10"
                  show-word-limit></el-input>
              </el-form-item>
            </el-col>
          </el-row>

          <el-row>
            <el-col :span="24">
              <el-form-item label="密 码" label-width="60px" prop="password">
                <el-input type="password" v-model="loginForm.password" autocomplete="off" prefix-icon="lock"
                  show-password></el-input>
              </el-form-item>
            </el-col>
          </el-row>

          <el-row>
            <el-col :span="16">
              <el-form-item label="验证码" label-width="60px" prop="captcha">
                <el-input v-model="loginForm.captcha" autocomplete="off" prefix-icon="check"></el-input>
              </el-form-item>
            </el-col>

            <el-col :span="8">
              <!-- 绑定点击事件来更新验证码图片 -->
              <img :src="captchaUrl" @click="updateCaptcha" class="captcha-image" alt="验证码">
            </el-col>
          </el-row>

          <el-form-item>
            <el-button type="primary" @click="handleLogin(ruleFormRef)" style="width: 100%;">登录</el-button>
          </el-form-item>

        </el-form>
        <RouterView />
      </div>

      <!-- 无帐号，点此注册 -->
      <el-row style="text-align: right;">
        <el-col>
          <el-text class="w-150px mb-2">
            若无帐号，点此>> <RouterLink to="/register" style="font-size: 1.2em;">注册</RouterLink>
          </el-text>
        </el-col>
      </el-row>
      <!-- <div>{{ hua }}</div> -->
    </el-card>
  </div>

</template>

<script setup>

import { ref, reactive } from 'vue';
import { RouterLink } from 'vue-router'
import { useRouter } from 'vue-router'
// import { login } from '@/api/user'
import { ElMessage } from 'element-plus';

// 验证码图片URL
const captchaUrl = ref('/api/captcha/default');

// 更新验证码的函数
function updateCaptcha() {
  // 假设您的后端提供了一个接口来获取新的验证码图片
  // 这里使用一个简单的时间戳来模拟动态更新的URL
  captchaUrl.value = `/api/captcha/default?t=${new Date().getTime()}`;
}

// 定时更新验证码
setInterval(updateCaptcha, 300000); // 每5分钟更新一次验证码

const loginForm = ref({
  username: '',
  password: '',
  captcha: ''
});
//获取表单对象
const ruleFormRef = ref()
//表单验证 
const rules = reactive({
  username: [
    { required: true, message: '请输入用户名', trigger: 'blur' }
  ],
  password: [
    { required: true, message: '请输入密码', trigger: 'blur' }
  ],
  captcha: [
    { required: true, message: '请输入验证码', trigger: 'blur' }
  ]
})

//路由对象
const router = useRouter()
async function handleLogin(formEl) {
  if (!formEl) return
  await formEl.validate((valid, fields) => {
    if (valid) {
      // console.log('submit!')
      console.log('登录信息:', loginForm.value)
      //todo 调用后端的接口 实现登录的操作
      router.push('/dashboard')
    } else {
      console.log('error submit!', fields)
    }
  })
}
</script>

<style scoped>
.login-container {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  background-image: url('@/assets/loginbg-1.png');
  /* 假设背景图片在assets目录下 */
  background-size: cover;
  background-position: center;
}

.login-card {
  width: 420px;
  padding: 20px;
  /* background-color: #fafafa; */
  background-color: #fefefe;
}

.login-title {
  text-align: center;
  margin-bottom: 20px;
  color: #409eff;
}

.login-form {
  width: 100%;
}

.captcha-image {
  cursor: pointer;
  /* 当鼠标悬停时显示为可点击状态 */
  margin-left: 10px;
  /* 与输入框保持一定间距 */
  height: 36px;
  /* 控制图片高度，根据实际情况调整 */
  vertical-align: middle;
  /* 垂直居中对齐 */
}
</style>